Analysis of the most affected countries in South America

Cross-country comparison over absolute dates

Confirmed

Dead

Daily Dead (7-Day Average)

Active

Cross-country comparison with approximately aligned start days

Confirmed

Dead

Daily Dead (7-Day Average)

Active

Per-country analysis with exponential and sigmoidal projections, and new cases analysis

IMPORTANT: The projections are only accurate if the fit is good (it often isn't), and assuming nothing changes going forward. The sigmoid is omitted if a reasonable fit can't be computed, but this still doesn't mean that the fit is good if it is shown.

The dashed lines show best fit projections from a few previous days for comparison.

Ecuador

Population $17,643,054$

Confirmed

Start date 2020-03-14 (1st day with 1 confirmed per million)

Latest number $43,378$ on 2020-06-08

Best fit exponential: \(5.09 \times 10^{3} \times 10^{0.012t}\) (doubling rate \(26.0\) days)
Best fit sigmoid: \(\dfrac{39,840.1}{1 + 10^{-0.046 (t - 44.7)}}\) (asimptote \(39,840.1\))

Dead

Start date 2020-03-14 (1st day with 0.1 dead per million)

Latest number $3,642$ on 2020-06-08

Best fit exponential: \(216 \times 10^{0.015t}\) (doubling rate \(19.8\) days)
Best fit sigmoid: \(\dfrac{3,738.9}{1 + 10^{-0.046 (t - 56.5)}}\) (asimptote \(3,738.9\))

Active

Start date 2020-03-14 (1st day with 1 active per million)

Latest number $18,716$ on 2020-06-08

Brazil

Population $212,559,417$

Confirmed

Start date 2020-03-17 (1st day with 1 confirmed per million)

Latest number $707,412$ on 2020-06-08

Best fit exponential: \(8.53 \times 10^{3} \times 10^{0.023t}\) (doubling rate \(13.0\) days)
Best fit sigmoid: \(\dfrac{1,487,443.9}{1 + 10^{-0.031 (t - 85.1)}}\) (asimptote \(1,487,443.9\))

Dead

Start date 2020-03-22 (1st day with 0.1 dead per million)

Latest number $37,134$ on 2020-06-08

Best fit exponential: \(1.02 \times 10^{3} \times 10^{0.020t}\) (doubling rate \(14.8\) days)
Best fit sigmoid: \(\dfrac{51,493.6}{1 + 10^{-0.034 (t - 66.9)}}\) (asimptote \(51,493.6\))

Active

Start date 2020-03-17 (1st day with 1 active per million)

Latest number $292,021$ on 2020-06-08

Peru

Population $32,971,854$

Confirmed

Start date 2020-03-14 (1st day with 1 confirmed per million)

Latest number $199,696$ on 2020-06-08

Best fit exponential: \(4.48 \times 10^{3} \times 10^{0.020t}\) (doubling rate \(15.4\) days)
Best fit sigmoid: \(\dfrac{287,332.7}{1 + 10^{-0.031 (t - 75.6)}}\) (asimptote \(287,332.7\))

Dead

Start date 2020-03-21 (1st day with 0.1 dead per million)

Latest number $5,571$ on 2020-06-08

Best fit exponential: \(182 \times 10^{0.019t}\) (doubling rate \(15.7\) days)
Best fit sigmoid: \(\dfrac{7,157.8}{1 + 10^{-0.034 (t - 65.0)}}\) (asimptote \(7,157.8\))

Active

Start date 2020-03-14 (1st day with 1 active per million)

Latest number $104,569$ on 2020-06-08

Chile

Population $19,116,201$

Confirmed

Start date 2020-03-11 (1st day with 1 confirmed per million)

Latest number $138,846$ on 2020-06-08

Best fit exponential: \(1.17 \times 10^{3} \times 10^{0.023t}\) (doubling rate \(12.9\) days)
Best fit sigmoid: \(\dfrac{373,555.3}{1 + 10^{-0.029 (t - 97.6)}}\) (asimptote \(373,555.3\))

Dead

Start date 2020-03-23 (1st day with 0.1 dead per million)

Latest number $2,264$ on 2020-06-08

Best fit exponential: \(15.4 \times 10^{0.027t}\) (doubling rate \(11.3\) days)

Active

Start date 2020-03-11 (1st day with 1 active per million)

Latest number $24,334$ on 2020-06-08

Bolivia

Population $11,673,021$

Confirmed

Start date 2020-03-18 (1st day with 1 confirmed per million)

Latest number $13,949$ on 2020-06-08

Best fit exponential: \(102 \times 10^{0.026t}\) (doubling rate \(11.5\) days)
Best fit sigmoid: \(\dfrac{31,090.0}{1 + 10^{-0.034 (t - 84.8)}}\) (asimptote \(31,090.0\))

Dead

Start date 2020-03-30 (1st day with 0.1 dead per million)

Latest number $475$ on 2020-06-08

Best fit exponential: \(14 \times 10^{0.022t}\) (doubling rate \(13.7\) days)
Best fit sigmoid: \(\dfrac{1,296.5}{1 + 10^{-0.027 (t - 79.7)}}\) (asimptote \(1,296.5\))

Active

Start date 2020-03-18 (1st day with 1 active per million)

Latest number $11,315$ on 2020-06-08

Colombia

Population $50,882,891$

Confirmed

Start date 2020-03-16 (1st day with 1 confirmed per million)

Latest number $40,847$ on 2020-06-08

Best fit exponential: \(800 \times 10^{0.020t}\) (doubling rate \(15.0\) days)
Best fit sigmoid: \(\dfrac{146,238.4}{1 + 10^{-0.023 (t - 103.6)}}\) (asimptote \(146,238.4\))

Dead

Start date 2020-03-26 (1st day with 0.1 dead per million)

Latest number $1,373$ on 2020-06-08

Best fit exponential: \(65.2 \times 10^{0.017t}\) (doubling rate \(17.3\) days)
Best fit sigmoid: \(\dfrac{3,697.0}{1 + 10^{-0.021 (t - 88.4)}}\) (asimptote \(3,697.0\))

Active

Start date 2020-03-16 (1st day with 1 active per million)

Latest number $23,015$ on 2020-06-08

Argentina

Population $45,195,774$

Confirmed

Start date 2020-03-16 (1st day with 1 confirmed per million)

Latest number $23,620$ on 2020-06-08

Best fit exponential: \(489 \times 10^{0.020t}\) (doubling rate \(15.2\) days)

Dead

Start date 2020-03-24 (1st day with 0.1 dead per million)

Latest number $693$ on 2020-06-08

Best fit exponential: \(57.9 \times 10^{0.014t}\) (doubling rate \(21.2\) days)
Best fit sigmoid: \(\dfrac{960.0}{1 + 10^{-0.023 (t - 62.9)}}\) (asimptote \(960.0\))

Active

Start date 2020-03-16 (1st day with 1 active per million)

Latest number $15,622$ on 2020-06-08

Uruguay

Population $3,473,730$

Confirmed

Start date 2020-03-13 (1st day with 1 confirmed per million)

Latest number $845$ on 2020-06-08

Best fit exponential: \(260 \times 10^{0.007t}\) (doubling rate \(45.9\) days)
Best fit sigmoid: \(\dfrac{809.9}{1 + 10^{-0.030 (t - 27.6)}}\) (asimptote \(809.9\))

Dead

Start date 2020-03-28 (1st day with 0.1 dead per million)

Latest number $23$ on 2020-06-08

Best fit exponential: \(6.78 \times 10^{0.008t}\) (doubling rate \(36.3\) days)
Best fit sigmoid: \(\dfrac{22.9}{1 + 10^{-0.036 (t - 25.3)}}\) (asimptote \(22.9\))

Active

Start date 2020-03-13 (1st day with 1 active per million)

Latest number $84$ on 2020-06-08

Recovering countries that had over 300 active cases at peak

List of all recovering countries (the top 4 not covered above are also analyzed below)

Uruguay recovered 74%